What limits the impact of the media in shaping public opinion?
Private media is a business, so they are only concerned with profits.
Americans typically tune in to media outlets that have similar views as their own, which only reinforces preexisting views.
Media outlets use sound bites to present information in a way that suits their own goals, causing the publicto be misinformed.
Supporting the free exchange of ideas and information is most important, so media outlets don't concern themselves with shaping people's views.